Instructions

13
WARNING
Recommended average tightening torques for screws in strength class 8.8 on NTK
housings and pistons (screws in state as supplied, not additionally lubricated or oiled):
que
* use total thread length
IMPORTANT
IMPORTANT
Type
SW
spring
[kg]
NTK 40 AL
3.5
NTK 40
5.0
NTK 55 AL
6.5
NTK 55 NF
9.5
NTK 85 NF
18.0
NTK 110
20.0
Type
SW
spring
[kg]
NTK 8 AL
0.15
NTK 15 x
0.70
NTK 16
1.00
NTK 18 AL
0.75
NTK 25 AL
1.60
NTK 25
3.00
NTK 28 AL
1.70
Use nuts that are self-locking to prevent them coming loose or use a liquid
securing agent e.g. Loctite 270. Also secure the air supply hoses with suitable
securing agents.
Apply tightening torques according to the table below.
Higher tightening torques may lead to broken screws or stripping of threads.
Incorrect screw connections may lead to the devices working loose as a result of
vibration. This can cause damage to persons and equipment!
With horizontal installation and
large
swing weights (weight of the
freely oscillating part larger than
SW
spring
weights
spring
- see table below) the
must be supported with a
(drawings
on
this
on
request).
SW
spring
= piston or housing weight
+ swing weight
Using vibrators as impactors is
possible. Prior consultation is
recommended.
The piston must strike against a
surface standing ⊥ vertically to the
vibrator.
For this application oiled
compressed air is stipulated.
Type
Thread* Tor
NTK 8 AL
M 6
(Housing) 10
Nm
NTK 8 AL
M 5
(Piston) 6
Nm
NTK 15 x
M 10
18
Nm
NTK 16, NTK 18 AL
M 10
48
Nm
NTK 25, NTK 25 AL, NTK 28 AL, NTK 40, NTK 40 AL
M 16
190
Nm
NTK 55, NTK 55 AL, NTK 85, NTK 110
M 20
380
Nm